/* ============================================================
   CertEnergía — sistema de diseño
   Dirección: "cuaderno de obra / plano técnico"
   - Fondo papel cálido, tinta casi negra, acento azul plano
   - El acento va reservado para acciones; la escala A-G solo
     aparece en los chips de calificación energética.
   - Tipografía de sistema (offline-first, sin dependencias CDN)
     con tracking ajustado para dar carácter técnico.
   ============================================================ */

:root{
  --paper:      #F6F3EC;
  --paper-dim:  #EDE8DC;
  --ink:        #1C2321;
  --ink-soft:   #4A5049;
  --line:       #D8D2C2;
  --blueprint:  #2C5F6F;   /* acento primario: azul plano técnico */
  --blueprint-dark: #1E4550;
  --blueprint-pale: #E1EBEC;
  --danger:     #A6402F;
  --danger-pale:#F3E2DE;
  --ok:         #3D7A4D;

  /* escala de calificación energética A→G, solo para chips */
  --rate-a:#2E7D46; --rate-b:#6AA33A; --rate-c:#B7C22E;
  --rate-d:#E8C21C; --rate-e:#E89B1C; --rate-f:#DE6A1F; --rate-g:#C43A25;

  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 2px rgba(28,35,33,.06), 0 4px 14px rgba(28,35,33,.06);

  --font-display: "Avenir Next", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: "SF Mono", "Menlo", "Consolas", monospace;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  -webkit-font-smoothing:antialiased;
  -webkit-tap-highlight-color:transparent;
  overscroll-behavior-y:none;
}

/* ---------- capa de fondo "plano técnico" (sutil) ---------- */
.blueprint-grid{
  position:fixed; inset:0; z-index:-1; pointer-events:none;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size:32px 32px;
  opacity:.35;
  -webkit-mask-image:linear-gradient(to bottom, black, transparent 55%);
          mask-image:linear-gradient(to bottom, black, transparent 55%);
}

/* ---------- barra superior ---------- */
#topbar{
  position:sticky; top:0; z-index:20;
  display:flex; align-items:center; gap:12px;
  padding:14px 18px;
  background:rgba(246,243,236,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
#topbar .brand{
  font-family:var(--font-display);
  font-weight:700;
  letter-spacing:.04em;
  font-size:15px;
  color:var(--blueprint-dark);
  display:flex; align-items:center; gap:8px;
}
#topbar .brand .mark{
  width:20px;height:20px;flex:none;
  border:1.5px solid var(--blueprint-dark); border-radius:4px;
  position:relative;
}
#topbar .brand .mark::before,#topbar .brand .mark::after{
  content:""; position:absolute; background:var(--blueprint-dark);
}
#topbar .brand .mark::before{ left:50%; top:2px; bottom:2px; width:1.5px; transform:translateX(-50%);}
#topbar .brand .mark::after{ top:50%; left:2px; right:2px; height:1.5px; transform:translateY(-50%);}

#topbar .expediente-info{
  flex:1; min-width:0;
  font-size:13px; color:var(--ink-soft);
  overflow:hidden; text-overflow:ellipsis; white-space:nowrap;
}
#topbar .expediente-info strong{ color:var(--ink); font-weight:600; }

.sync-pill{
  display:flex; align-items:center; gap:6px;
  font-size:11px; font-weight:600; letter-spacing:.03em; text-transform:uppercase;
  padding:6px 10px; border-radius:99px;
  border:1px solid var(--line); background:var(--paper-dim); color:var(--ink-soft);
  flex:none;
}
.sync-pill .dot{ width:7px;height:7px;border-radius:50%; background:var(--ink-soft); }
.sync-pill.online .dot{ background:var(--ok); }
.sync-pill.offline .dot{ background:var(--danger); }
.sync-pill.pending .dot{ background:var(--rate-e); }

/* ---------- indicador de pasos (línea de cota técnica) ---------- */
#stepper{
  display:flex; align-items:stretch; gap:0;
  padding:10px 14px 0;
  overflow-x:auto;
  scrollbar-width:none;
}
#stepper::-webkit-scrollbar{ display:none; }
.step-tick{
  flex:1; min-width:84px;
  display:flex; flex-direction:column; align-items:center; gap:6px;
  padding:6px 4px 12px;
  font-size:11px; font-weight:600; letter-spacing:.03em; text-transform:uppercase;
  color:var(--ink-soft);
  border:none; background:none; cursor:pointer;
  position:relative;
}
.step-tick::before{
  content:""; position:absolute; top:0; left:0; right:0; height:2px;
  background:var(--line);
}
.step-tick.active::before, .step-tick.done::before{ background:var(--blueprint); }
.step-tick .num{
  font-family:var(--font-mono); font-size:10px; color:var(--ink-soft);
}
.step-tick.active{ color:var(--blueprint-dark); }
.step-tick.active .num{ color:var(--blueprint); }
.step-tick.done .num::after{ content:" ✓"; }

/* ---------- contenido ---------- */
main{ padding:18px 18px 100px; max-width:720px; margin:0 auto; }

.panel-title{
  font-family:var(--font-display);
  font-size:20px; font-weight:700; letter-spacing:.01em;
  margin:4px 0 2px;
}
.panel-sub{
  font-size:13px; color:var(--ink-soft); margin:0 0 20px;
}

.card{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:16px; margin-bottom:14px; box-shadow:var(--shadow);
}

.field{ margin-bottom:16px; }
.field label{
  display:block; font-size:12px; font-weight:600; color:var(--ink-soft);
  letter-spacing:.02em; margin-bottom:6px;
}
.field .hint{ font-size:11px; color:var(--ink-soft); margin-top:4px; }

input[type=text], input[type=number], input[type=date], select, textarea{
  width:100%; padding:12px 12px; font-size:16px; font-family:var(--font-body);
  border:1.5px solid var(--line); border-radius:var(--radius-sm);
  background:#fff; color:var(--ink);
}
input:focus, select:focus, textarea:focus{
  outline:none; border-color:var(--blueprint); box-shadow:0 0 0 3px var(--blueprint-pale);
}
textarea{ resize:vertical; min-height:70px; }

.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:12px; }
@media (max-width:480px){ .field-row{ grid-template-columns:1fr; } }

/* chips de selección (para orientación, tipo, etc.) */
.chip-group{ display:flex; flex-wrap:wrap; gap:8px; }
.chip{
  padding:9px 14px; border-radius:99px; border:1.5px solid var(--line);
  background:#fff; font-size:13px; font-weight:600; color:var(--ink-soft);
  cursor:pointer; user-select:none;
}
.chip.selected{ border-color:var(--blueprint); background:var(--blueprint-pale); color:var(--blueprint-dark); }

/* ---------- listas repetibles (envolvente/huecos/instalaciones) ---------- */
.item-list{ display:flex; flex-direction:column; gap:10px; margin-bottom:14px; }
.item-row{
  display:flex; align-items:center; gap:12px;
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:12px 14px; cursor:pointer;
}
.item-row .thumb{
  width:44px;height:44px;border-radius:var(--radius-sm); flex:none;
  background:var(--paper-dim) center/cover no-repeat;
  display:flex; align-items:center; justify-content:center;
  color:var(--ink-soft); font-size:11px; overflow:hidden;
}
.item-row .meta{ flex:1; min-width:0; }
.item-row .meta .t{ font-weight:600; font-size:14px; }
.item-row .meta .s{ font-size:12px; color:var(--ink-soft); }
.item-row .chevron{ color:var(--ink-soft); font-size:18px; }

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding:12px 18px; border-radius:var(--radius-sm); border:1.5px solid transparent;
  font-size:14px; font-weight:700; letter-spacing:.01em; cursor:pointer;
  font-family:var(--font-body);
}
.btn-primary{ background:var(--blueprint); color:#fff; }
.btn-primary:active{ background:var(--blueprint-dark); }
.btn-outline{ background:#fff; border-color:var(--line); color:var(--ink); }
.btn-outline:active{ background:var(--paper-dim); }
.btn-danger{ background:var(--danger-pale); color:var(--danger); }
.btn-block{ width:100%; }
.btn-add{
  display:flex; align-items:center; justify-content:center; gap:8px;
  width:100%; padding:14px; border-radius:var(--radius);
  border:1.5px dashed var(--line); background:transparent;
  color:var(--blueprint-dark); font-weight:700; font-size:14px; cursor:pointer;
}
.btn-add:active{ background:var(--blueprint-pale); }

/* ---------- fotos ---------- */
.photo-grid{ display:grid; grid-template-columns:repeat(auto-fill,minmax(84px,1fr)); gap:8px; margin-top:10px; }
.photo-grid .photo{
  aspect-ratio:1; border-radius:var(--radius-sm); overflow:hidden; position:relative;
  border:1px solid var(--line); background:var(--paper-dim);
}
.photo-grid .photo img{ width:100%; height:100%; object-fit:cover; display:block; }
.photo-grid .photo .rm{
  position:absolute; top:4px; right:4px; width:22px;height:22px; border-radius:50%;
  background:rgba(28,35,33,.7); color:#fff; border:none; font-size:14px; line-height:1;
}
.photo-add{
  aspect-ratio:1; border-radius:var(--radius-sm); border:1.5px dashed var(--line);
  display:flex; align-items:center; justify-content:center; color:var(--ink-soft);
  font-size:22px; background:transparent;
}

/* ---------- barra inferior de navegación ---------- */
#navbar{
  position:fixed; bottom:0; left:0; right:0; z-index:20;
  display:flex; gap:10px; padding:12px 16px calc(12px + env(safe-area-inset-bottom));
  background:rgba(246,243,236,.94); backdrop-filter:blur(8px);
  border-top:1px solid var(--line);
}
#navbar .btn{ flex:1; }

/* ---------- modal (bottom sheet estilo iPad) ---------- */
.sheet-backdrop{
  position:fixed; inset:0; background:rgba(28,35,33,.35); z-index:40;
  display:flex; align-items:flex-end; justify-content:center;
}
.sheet{
  width:100%; max-width:720px; max-height:88vh; overflow-y:auto;
  background:var(--paper); border-radius:18px 18px 0 0;
  padding:20px 18px calc(20px + env(safe-area-inset-bottom));
  box-shadow:0 -8px 30px rgba(28,35,33,.2);
}
.sheet-handle{ width:36px;height:4px;border-radius:99px;background:var(--line); margin:0 auto 16px; }
.sheet-header{ display:flex; align-items:center; justify-content:space-between; margin-bottom:16px; }
.sheet-header h3{ font-family:var(--font-display); margin:0; font-size:17px; }
.sheet-close{ background:none; border:none; font-size:22px; color:var(--ink-soft); padding:4px; }

/* ---------- lista de expedientes ---------- */
.exp-row{
  display:flex; align-items:center; gap:12px;
  background:#fff; border:1px solid var(--line); border-radius:var(--radius);
  padding:14px; margin-bottom:10px; cursor:pointer;
}
.exp-row .badge{
  width:40px;height:40px;border-radius:50%; flex:none;
  background:var(--blueprint-pale); color:var(--blueprint-dark);
  display:flex; align-items:center; justify-content:center; font-weight:700; font-family:var(--font-mono);
}
.exp-row .meta{ flex:1; min-width:0; }
.exp-row .meta .t{ font-weight:700; font-size:14px; }
.exp-row .meta .s{ font-size:12px; color:var(--ink-soft); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }

/* rating chip A-G */
.rate-chip{
  display:inline-flex; align-items:center; justify-content:center;
  width:26px;height:22px; font-family:var(--font-mono); font-weight:700; font-size:13px;
  color:#fff; border-radius:4px;
}
.rate-a{background:var(--rate-a);} .rate-b{background:var(--rate-b);} .rate-c{background:var(--rate-c); color:var(--ink);}
.rate-d{background:var(--rate-d); color:var(--ink);} .rate-e{background:var(--rate-e);}
.rate-f{background:var(--rate-f);} .rate-g{background:var(--rate-g);}

/* estado vacío */
.empty{ text-align:center; padding:40px 20px; color:var(--ink-soft); }
.empty .icon{ font-size:32px; margin-bottom:10px; }

/* toasts */
#toast{
  position:fixed; bottom:88px; left:50%; transform:translateX(-50%) translateY(8px);
  background:var(--ink); color:var(--paper); padding:10px 18px; border-radius:99px;
  font-size:13px; font-weight:600; opacity:0; pointer-events:none; transition:.2s ease; z-index:60;
}
#toast.show{ opacity:1; transform:translateX(-50%) translateY(0); }

/* accesibilidad: foco visible */
button:focus-visible, .chip:focus-visible, .item-row:focus-visible{
  outline:2px solid var(--blueprint); outline-offset:2px;
}

@media (prefers-reduced-motion: reduce){ *{ transition:none !important; animation:none !important; } }

/* impresión (para el resumen exportable) */
@media print{
  #topbar,#navbar,#stepper,.blueprint-grid{ display:none !important; }
  body{ background:#fff; }
  main{ padding:0; max-width:none; }
}